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Truck wont start

Tiny
DAVE50
  • MEMBER
  • 1998 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 120,000 MILES
I have a 1998 Chevy silverado I have been having trouble getting it to start. Sometimes it starts sometimes it does not. I changed the fuel pump thinking this was the problem but it is still giving me problems. It is not the battery either. It is definitely getting fuel and pressure guages are reading good. When it does start it runs great. Any ideas
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Tuesday, August 31st, 2010 AT 6:05 PM

8 Replies

Tiny
MADMIKE1735
  • MECHANIC
  • 951 POSTS
When you say it wont start, is it cranking over but not firing, or is it not cranking? I may be able to help ya with a little more info. Also, is the 5.7 v-8?
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Wednesday, September 2nd, 2020 AT 5:35 PM
Tiny
DAVE50
  • MEMBER
  • 5 POSTS
I have 5.7 v8 it cranks but will die immediately. We changed fuel pump and filter and relay. Some one suggested ignition switch?
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Wednesday, September 2nd, 2020 AT 5:35 PM
Tiny
MADMIKE1735
  • MECHANIC
  • 951 POSTS
When it dies, it shuts off like u turn the key off, or is it a longer drawn out process like running out of gas, and sputters? It very well could be in the ignition, but I havnt seen a bad ignition make them shut off. Only not start. No check engine light is on correct?
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Wednesday, September 2nd, 2020 AT 5:35 PM
Tiny
DAVE50
  • MEMBER
  • 5 POSTS
It has started but died within a second or so. No sputtering, just as if you killed the switch. The check engine light is not on. Afew times it started and ran normally but then next time I tried to start it same trouble.
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Wednesday, September 2nd, 2020 AT 5:35 PM
Tiny
MADMIKE1735
  • MECHANIC
  • 951 POSTS
I have seen alot of crazy things in my shop. My question to you is did this just start in one day, or was it a gradual thing? I once worked on a truck that got hit by lightning. The customer parked it outside, it was fine until that t-storm. Next day it was towed to my shop. It started for me, but then died. I found a bunch of burned wires in the fusible link. Thats why I ask.
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Wednesday, September 2nd, 2020 AT 5:35 PM
Tiny
DAVE50
  • MEMBER
  • 5 POSTS
That is a possibility, as the truck was exposed to the weather when problem started. Where would this fuseable link be located. There is no apparent damage to my truck to indicate a lightening strike. This problem has just started.
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Wednesday, September 2nd, 2020 AT 5:35 PM
Tiny
MADMIKE1735
  • MECHANIC
  • 951 POSTS
It will be on either the driverside fenderwell, or passenger side fenderwell. No noticeable damage to vehicle is the same thing on the one I dealt with. As soon as I unbolted the fuseable link and started taking the loom off the wires, the damage was clear as day. Cut out the bad sections, and solder in new sections. Dont forget the heat shrink.
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Wednesday, September 2nd, 2020 AT 5:35 PM
Tiny
DAVE50
  • MEMBER
  • 5 POSTS
Will check this out first thing in morning and get back to you. Hope the problem is this simple. Thanks alot. Will post tomorrow on outcome.
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Wednesday, September 2nd, 2020 AT 5:35 PM

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